19004065

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1\times {\mathrm{563}}^1$

素因数の和:768

約数の個数: 16

約数和(自身を含む): 23525568

約数和(自身を除く): 4521503

約数列:

[1, 5, 43, 157, 215, 563, 785, 2815, 6751, 24209, 33755, 88391, 121045, 441955, 3800813, 19004065]

約数ペア:

[(1, 19004065), (5, 3800813), (43, 441955), (157, 121045), (215, 88391), (563, 33755), (785, 24209), (2815, 6751)]